Note 5 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Options Outstanding and Exercisable:
Range of Exercise Price			Number Outstanding		Wgt. Avg. Contractual Life Remaining (in years)		Wgt. Avg. Exercise Price		Aggregate Intrinsic Value
$3.50	-	$3.86		13,000		3.5	$	3.75	$	211,260
	$7.80			8,000		4.7	$	7.80	$	97,600
	$19.99			30,000		5.3	$	19.99	$	300
	$39.11			8,000		5.7	$	39.11	$	−
$3.50	-	$39.11		59,000		4.9	$	17.35	$	309,160